The following treatment should be carried out for pus on the leg: first, disinfection 1-2 times a day, you can use hydrogen peroxide, saline and iodophor for disinfection, after disinfection, you can use iodophor gauze for external application, which is conducive to the elimination of inflammation. Second, oral medication, according to the results of drug sensitivity and bacterial culture results of oral medication or static drug treatment, pain can be oral pain medication. Third, lower limb braking can reduce the painful symptoms of septicemia and prevent further aggravation of septicemia. Finally, surgical incision and drainage, if the septic area is relatively large and cannot be completely removed by changing medication, then we have to make an incision to drain the septic fluid, which will allow the wound to grow from the inside to the outside and facilitate the growth of the septic wound.